No Notification Provided When Creating a New Org when Org Slug Already Exists

[ReneGreen27]

Problem Statement

When Creating a New Sentry Org or placing a Migration request, if the org already exists it would be a better user experience to have the user notified in some way that the org slug is already taken. Instead it seems by default we automatically create a org slug with an autogenerated "-tworandomcharacters" attached. For example:

Solution Brainstorm

Either have a popup on the org creation page letting them know this isn't available, email the user in the case of the migration request

Product Area

Settings

[getsantry]

Assigning to @getsentry/support for routing ⏲️